Edison in 1902 started to Gold Mould cylinders, this process uses a oversized groove and a large wax master. The master is placed in a vacuum with 2 pieces of gold leaf. High voltage is introduced to the gold leaf in the bell jar, and vaporizes...

In 1908 Edison increased the playing time of the cylinders. From 1888-1902 the speed of the records varied so the record could fit the song, anywhere from 90-144rpm. After 1902 the speed was standardized at 160rpm. In 1908 Edison cylinders...

Letter from Rice plantation manager A. B. Parks in Choctaw Agency, Mississippi, to Augusta Hopkins Rice in Mobile, Alabama, regarding the state of the crops and livestock and the health of the workers, including slaves, 1864.

Edison in 1902 started to Gold Mould cylinders, this process uses a oversized groove and a large wax master. The master is placed in a vacuum with 2 pieces of gold leaf. High voltage is introduced to the gold leaf in the bell jar, and vaporizes...

Edison in 1902 started to Gold Mould cylinders, this process uses a oversized groove and a large wax master. The master is placed in a vacuum with 2 pieces of gold leaf. High voltage is introduced to the gold leaf in the bell jar, and vaporizes...

there is a man and a woman standing in the background; there are flowers in the foreground, as well as a circular design with a little boy inside; there is a photo inset of Marion Harris / Albert Alex Smith

there is a man and a woman standing in the background; there are flowers in the foreground, as well as a circular design with a little boy inside; there is a photo inset of Marion Harris / Albert Alex Smith

Orland L. Lott family farm; multiple views. Farm of 1015 acres located about five and a half miles southwest of Seminary, MS. Covington Co. Agricultural agent Arthur O'Brien assisted with selection of farm family.